CN117411337A - Permanent magnet traction converter - Google Patents
Permanent magnet traction converter Download PDFInfo
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- CN117411337A CN117411337A CN202210799999.5A CN202210799999A CN117411337A CN 117411337 A CN117411337 A CN 117411337A CN 202210799999 A CN202210799999 A CN 202210799999A CN 117411337 A CN117411337 A CN 117411337A
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- permanent magnet
- module
- magnet traction
- traction converter
- converter
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- 238000002955 isolation Methods 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 46
- 229910052802 copper Inorganic materials 0.000 claims description 46
- 239000010949 copper Substances 0.000 claims description 46
- 230000007704 transition Effects 0.000 claims description 11
- 239000012212 insulator Substances 0.000 claims description 6
- 150000001879 copper Chemical class 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 22
- 238000013461 design Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a permanent magnet traction converter which comprises a filter reactor, a charging short circuit unit, a cooling fan, a direct current input cavity, a converter module, an isolation contactor and an alternating current output cavity, wherein the converter module is positioned in front, the cooling fan is positioned at the rear of the converter module, the direct current input cavity is positioned at one side of the rear of the converter module and is adjacent to the cooling fan, the charging short circuit unit is positioned at the rear of the direct current input cavity, the filter reactor is positioned at the rubber side of the cooling fan, the alternating current output cavity is opposite to the direct current input cavity, the isolation contactor is arranged in the alternating current output cavity, and the alternating current output cavity is of an externally hung box type structure. The permanent magnet traction converter provided by the invention can realize the consistency of the mechanical installation size and the position of an electrical interface with the asynchronous traction converter; further improving the miniaturization and light weight level of the permanent magnet traction converter.
Description
Technical Field
The invention relates to the technical field of rail transit current transformation, in particular to a permanent magnet traction current transformer.
Background
With the continuous development of market scale and customer demands of rail transit, the permanent magnet traction system has increasingly outstanding technical advantages of high efficiency, energy conservation and environmental protection, and has become the preferred scheme in the field of rail transit. However, the weight and the volume of the traditional permanent magnet traction converter are increased more than those of an asynchronous system due to the fact that the number of the converter modules is large, the weight and the volume of the isolation contactor are large, and the like; because of the difference of the number of the converter modules, the whole cabinet layout and the cooling system design of the traditional permanent magnet traction converter cannot be consistent with those of the asynchronous traction converter, so that the mechanical installation size and the electrical interface position of the permanent magnet traction converter are greatly different from those of the asynchronous system. The large difference of the weight and the interfaces brings a plurality of inconveniences to the layout and wiring of the whole vehicle equipment, and becomes a main factor for preventing the application of the permanent magnet traction converter in the mass market.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a permanent magnet traction converter, which realizes simplification of an installation interface and a structure of a converter module through compatibility design, wherein a newly-added alternating current output cavity is mainly used for installing an isolation contactor and an alternating current outlet structure, and the consistency of the whole layout of a main body part and an asynchronous traction converter is not influenced through the form of an externally-hung box body.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the utility model provides a permanent magnetism traction current transformer, including the filter reactor, the short circuit unit charges, cooling blower, direct current input cavity, the converter module, isolation contactor and AC output cavity, wherein, the converter module is located the place ahead, cooling blower is located the rear of converter module, direct current input cavity is located one side of converter module rear and arranges with cooling blower is adjacent, the short circuit unit charges is located direct current input cavity rear, the filter reactor is located the cooling blower rear, AC output cavity is arranged with direct current input cavity is relative, isolation contactor arranges in AC output cavity, AC output cavity is external box formula structure.
According to the permanent magnet traction converter, the layout positions of the filter reactor, the charging short circuit unit, the cooling fan, the direct current input cavity and the converter module are consistent with those of the asynchronous traction converter, the direct current input cavity and the converter module cavity are consistent with each other, the high-voltage copper bar cable path is consistent with the asynchronous traction converter, the simplification of the installation interface and the structure of the converter module is realized through compatibility design, the newly added alternating current output cavity is mainly used for installing an isolation contactor and an alternating current outlet structure, and the consistency of the integral layout of the main body part and the asynchronous traction converter is not influenced through the form of the externally hung box body.
Further improvements to the above described solution are possible as follows.
In a preferred embodiment of the permanent magnet traction converter according to the invention, the converter module comprises an IGBT device, the IGBT device being an XHP packaged double tube device, the converter module comprising a 4-way three-phase inverter circuit and a 2-way chopper circuit.
Specifically, the XHP packaging double-tube device is selected, the area of a radiator occupied by a single device is greatly reduced, therefore, 4 three-phase inversion +2 chopper circuits can be integrated by a single converter module, the number of the converter modules is 1 from the traditional 2, each three-phase inverter circuit drives 1 motor, thus, the number of the 1 converter modules can be driven to 4 motors, and meanwhile, the weight and the volume index of the single converter module are greatly reduced compared with the traditional 2 converter modules, so that the miniaturization and the light weight are realized.
Further, in a preferred embodiment, the converter module includes a control unit and a power board, the control unit and the power board are mounted on the front surface of the converter module and face the side surface of the vehicle body, a direct current side copper bar is arranged on one side of the direct current input cavity, and an alternating current side copper bar is arranged on one side of the alternating current output cavity.
Specifically, the converter module adopts the design that one side is connected with the direct current side copper bar, one side is connected with the alternating current side copper bar, the control unit is installed on the front surface and the power panel is installed, the shortest copper bar path can be realized, and the space occupation is minimized, so that the maintainability of the control unit and the power panel can be improved on the premise of meeting the installation space of the copper bar.
Further, in a preferred embodiment, the converter modules are arranged on the cabinet body mounting beams by means of guide assemblies, wherein the guide assemblies comprise guide rails fixed on the cabinet body mounting beams and sliding grooves connected with the guide rails in a sliding manner, transition plates are arranged on the sliding grooves, the converter modules are fixed on the transition plates by means of module mounting plates, and the module mounting plates are fixed on the cabinet body.
The guide assembly is adopted for installation, so that the maintainability of the whole converter module can be improved.
Further, in a preferred embodiment, a module mounting beam is provided on the module mounting plate, one side of the module mounting beam is fixed on the cabinet body, the other side is connected with a stop plate, and the outer side of the stop plate is provided with a reinforcing rib.
The fixed point of module and cabinet body has been increased through increasing the module installation roof beam, more is favorable to the effective fixed of module, increases anti-vibration performance, has further strengthened structural strength through newly increasing baffle and strengthening rib structure to satisfy the higher structural strength requirement of fixed converter module.
Specifically, in a preferred embodiment, the transition plate is an L-shaped structure.
The transition plate with the L-shaped structure can be well matched with the guide structure for installation, the module installation plates can be well arranged, and the installation structure strength is improved as much as possible on the premise that the installation space is as small as possible.
Specifically, in a preferred embodiment, the guide rail is a cylindrical roller structure.
The guide assembly adopts a rolling friction mode, so that the friction force in the drawing process can be further reduced, and the stable and smooth guide process is ensured.
Further, in a preferred embodiment, the permanent magnet traction converter is provided with symmetrically arranged lifting lugs, and the lifting lugs are provided with mounting holes, and the mounting holes are designed to be eccentric and offset inwards by a preset distance relative to the main beam of the permanent magnet traction converter.
The lifting lug mounting holes are properly designed eccentrically relative to the main beam of the converter, so that consistency of hanging size and asynchronous traction converter can be realized.
Further, in a preferred embodiment, the mounting holes comprise two groups and are arranged in parallel in the direction of travel.
Each lifting lug is provided with 2 mounting holes, so that the strength requirement and the safety redundancy requirement can be effectively met.
Specifically, in a preferred embodiment, the mounting hole is a kidney-shaped hole extending in a direction perpendicular to the vehicle-shaping direction.
Through the waist-shaped hole, the hanging size can be flexibly adjusted according to different vehicle types, so that the hanging requirements of different vehicle types can be met.
In particular, in a preferred embodiment, the high voltage dc input and chopper electrical interface, the fan power electrical interface and the control electrical interface are located on the same side of the permanent magnet traction converter, respectively, and the ac output electrical interface is arranged on the other side of the permanent magnet traction converter, respectively.
Specifically, the high-voltage direct current input and chopper electric interface is positioned at the right lower part, the fan power supply electric interface is positioned at the middle lower part, the control electric interface is positioned at the left lower part, the alternating current output electric interface is positioned at the right upper part, the high-voltage wire is positioned at one side of the vehicle and at the other side of the vehicle with the low-voltage wire, and the requirement of separating wires with the high-voltage wire and the low-voltage wire grooves on the vehicle is consistent, and meanwhile, the electromagnetic compatibility requirement of separating wires with the high-voltage wire and the low-voltage wire is also met, so that the wiring requirement of the vehicle is met; meanwhile, the wire outlet positions of the permanent magnet traction converter are basically consistent with the wire outlet positions of the asynchronous traction converter, the wiring system type of the asynchronous vehicle and the permanent magnet vehicle can be realized, and the interchangeability of the asynchronous traction system and the permanent magnet traction system on the same vehicle type can be realized, so that the permanent magnet traction converter is beneficial to popularization and use.
Further, in a preferred embodiment, a current sensor is arranged between the output point of the converter module and the input point of the isolation contactor, at least 2 layers of laminated copper bars are adopted between the output point of the converter module and the output point of the current sensor, the output point of the current sensor is connected with the input point of the isolation contactor by cables, the cables are distributed and spread at the bottom of the cabinet, and the output point of the isolation contactor is connected with the output point of the alternating current by copper bars.
Specifically, between the module output point and the sensor output point, 2 layers or 3 layers of laminated copper bars are used, so that the copper bars are ensured to have proper rigidity and flexibility, the maintainability of the converter module is met, the copper bars can conveniently pass through the current sensor, and the maintainability of the current sensor is ensured; between the sensor output point and the contactor input point, a general cable or flexible cable scheme is optimized according to the current value, and wires are laid out and distributed at the bottom of the cabinet body, so that the insulation requirements of 12 cables in a narrow space are met, the cable turning radius requirement is met, the cable heat dissipation requirement is met, and the cost requirement is met; between the contactor output point and the ac output point, it is necessary to implement a plurality of cable path changes in a small height space and satisfy maintainability of the contactor and manipulability of external wiring, so that a general copper bar scheme is preferably used.
Further, in a preferred embodiment, the copper bar between the output point of the isolation contactor and the ac output point is provided with a notch avoiding the isolation contactor.
Through suitably breaking the copper bar, the external wiring bolt is not required to be disassembled when the isolation contactor is disassembled, and maintainability is improved.
Further, in a preferred embodiment, a shield ground point is provided at a location near the current sensor.
In order to meet EMC performance, shielding grounding points are arranged beside the current sensor, and the shielding layer of the sensor cable is grounded.
Further, in a preferred embodiment, the output points of the converter module and the output points of the current sensor are connected by a first module structure, the first module connection structure comprises two groups, each group of first module connection structure comprises 4 groups of current sensors, 6 groups of copper bars and 6 groups of insulators which are respectively arranged on the mounting beam, the insulators are wrapped on the copper bars, the input points of the isolation contactors and the output points of the alternating current are connected by a second module structure, the second module connection structure comprises two groups, and each group of second module connection structure comprises 2 groups of isolation contactors and 6 groups of output copper bars which are respectively arranged on the mounting plate.
Through the modularized design, manufacturability and maintainability can be effectively improved.
Specifically, in a preferred embodiment, the isolation contactor is side mounted with the ac output located on top of the isolation contactor.
The isolation contactor adopts a side mounting mode, the mechanical mounting bolts and the copper bar connecting bolts can be fastened in the front, the secondary circuit wiring points are arranged at the top of the contactor, the operation is convenient, and the maintainability of the isolation contactor is improved.
Further, in a preferred embodiment, the ac output point is wired using a double hole socket, the external wiring bolt is used for the whole car wiring, and the internal fixing bolt is used for fixing the copper bar.
The alternating current output wiring adopts the diplopore wiring seat, and outside bolt is used for whole car wiring, and inboard bolt is used for fixed copper bar, and both separately set up, need not to operate inboard fixing bolt when whole car wiring, improves the reliability of electric connection and the maneuverability of whole car wiring.
Specifically, in a preferred embodiment, the isolation contactor is a vacuum isolation contactor.
The vacuum isolation contactor is adopted, so that the weight and volume index can be reduced, and meanwhile, the breaking capacity of the isolation contactor is improved.
Compared with the prior art, the invention has the advantages that: the consistency of the mechanical installation size and the position of the electrical interface with the asynchronous traction converter can be realized; further improving the miniaturization and light weight level of the permanent magnet traction converter.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 schematically shows a circuit configuration of a permanent magnet traction converter according to an embodiment of the present invention;
fig. 2 schematically illustrates a top view of a permanent magnet traction converter according to an embodiment of the invention;
figure 3 schematically illustrates a front view of a permanent magnet traction converter according to an embodiment of the invention;
fig. 4 schematically shows the internal structure of a permanent magnet traction converter according to an embodiment of the invention;
FIG. 5 schematically illustrates a mounting structure for a guide structure in an embodiment of the present invention;
FIG. 6 schematically illustrates another orientation of the mounting structure of the guide structure in an embodiment of the present invention;
FIG. 7 schematically illustrates a mounting structure for a isolating contactor in an embodiment of the invention;
fig. 8 schematically illustrates another orientation of the mounting structure for isolating the contactor in an embodiment of the invention.
In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will now be described in further detail with reference to the drawings and the specific examples, which are not intended to limit the scope of the invention.
Fig. 1 schematically shows a circuit configuration of a permanent magnet traction converter 10 according to an embodiment of the present invention. Fig. 2 schematically illustrates a top view of a permanent magnet traction converter 10 according to an embodiment of the present invention fig. 3 schematically illustrates a front view of the permanent magnet traction converter 10 according to an embodiment of the present invention. Fig. 4 schematically shows the internal structure of a permanent magnet traction converter according to an embodiment of the invention. Fig. 5 schematically shows a mounting structure of a guide structure in an embodiment of the present invention. Fig. 6 schematically shows another directional mounting structure of the guide structure in an embodiment of the present invention. Fig. 7 schematically illustrates a mounting structure for a isolating contactor in an embodiment of the invention. Fig. 8 schematically illustrates another orientation of the mounting structure for isolating the contactor in an embodiment of the invention.
As shown in fig. 1 and fig. 4, the permanent magnet traction converter 10 according to the embodiment of the present invention has an input end connected to a DC1500V high-voltage positive and negative line to obtain a DC high-voltage power supply, and an output end connected to 4 permanent magnet synchronous motors 6 to provide three-phase ac power thereto, and is simultaneously connected to an overvoltage absorption resistor or a brake resistor 7 to perform overvoltage energy absorption or brake energy absorption. Specifically, the permanent magnet traction converter 10 of the embodiment of the invention comprises a charging short-circuit unit 1, a filter reactor 2, a converter module 3, an isolation contactor 4, a cooling fan 5, a direct current input cavity 8 and an alternating current output cavity 9 at the output side, wherein the converter module 3 is positioned below, the cooling fan 5 is positioned at the rear of the converter module 3, the direct current input cavity 8 is positioned at one side behind the converter module 3 and is adjacent to the cooling fan 5, the charging short-circuit unit 1 is positioned behind the direct current input cavity 8, the filter reactor 2 is positioned behind the cooling fan 5, the alternating current output cavity 9 is opposite to the direct current input cavity 8, the isolation contactor 4 is arranged in the alternating current output cavity 9, and the alternating current output cavity 9 is of an externally-hung box type structure.
According to the permanent magnet traction converter provided by the embodiment of the invention, the layout positions of the filter reactor, the charging short circuit unit, the cooling fan, the direct current input cavity and the converter module are consistent with those of the asynchronous traction converter, the direct current input cavity and the converter module cavity, the high-voltage copper bar cable path is consistent with that of the asynchronous traction converter, the simplification of the installation interface and structure of the converter module is realized through compatibility design, the newly added alternating current output cavity is mainly used for installing an isolation contactor and an alternating current outlet structure, and the consistency of the integral layout of the main body part and the asynchronous traction converter is not influenced through the form of the externally hung box body.
As shown in fig. 1 and 2, specifically, in the present embodiment, the converter module 3 includes an IGBT device employing an XHP-packaged double-tube device, and the converter module 3 includes a 4-way three-phase inverter circuit and a 2-way chopper circuit. Specifically, the XHP packaging double-tube device is selected, the model is particularly preferably FF450R33T3E3_B5, the area of a radiator occupied by a single device is greatly reduced, therefore, 4 three-phase inversion +2 chopper circuits can be integrated into a single converter module, the number of the converter modules is 1 from the traditional 2, each three-phase inverter circuit drives 1 motor, thus 4 motors can be driven by 1 converter module, and meanwhile, compared with the traditional 2 converter modules, the weight and volume index of the single converter module are greatly reduced, and the miniaturization and the light weight are realized. Specifically, in the present embodiment, the isolation contactor 4 is a vacuum isolation contactor, preferably model: VS200-NC. The vacuum isolation contactor is adopted, so that the weight and volume index can be reduced, and meanwhile, the breaking capacity of the isolation contactor is improved. The components for determining the driving direction size are mainly the converter module and the isolation contactor, and the driving direction size L4 is effectively reduced by the miniaturization design of the converter module, the miniaturization design of the isolation contactor and the design and shape selection of the isolation contactor and the fine design of the installation and maintenance space.
Further, in the present embodiment, as shown in fig. 3, the converter module 3 includes a control unit 31 and a power board 32, the control unit 31 and the power board 32 are mounted on the front surface of the converter module 3 and face the vehicle body side, the dc input cavity 8 side is provided with a dc side copper bar 81, and the ac output cavity 9 side is provided with an ac side copper bar 91. Specifically, the converter module adopts the design that one side is connected with the direct current side copper bar, one side is connected with the alternating current side copper bar, the control unit is installed on the front surface and the power panel is installed, the shortest copper bar path can be realized, and the space occupation is minimized, so that the maintainability of the control unit and the power panel can be improved on the premise of meeting the installation space of the copper bar.
Further, as shown in fig. 3, 5 and 6, in the present embodiment, the converter module 3 is disposed on the cabinet mounting beam 20 by a guide assembly 100, wherein the guide assembly 100 includes a guide rail 101 fixed on the cabinet mounting beam 20 and a slide groove 102 slidably connected with the guide rail, a transition plate 103 is provided on the slide groove 102, the converter module 3 is fixed on the transition plate 103 by a module mounting plate 104, and the module mounting plate 104 is fixed on the cabinet. The guide assembly is adopted for installation, so that the maintainability of the whole converter module can be improved. Further, in this embodiment, a module mounting beam 105 is disposed on the module mounting plate 104, one side of the module mounting beam 105 is fixed on the cabinet body, the other side is connected with a stop plate 106, and at least two groups of reinforcing ribs 107 are disposed on the outer side of the stop plate 106. The fixed point of module and cabinet body has been increased through increasing the module installation roof beam, more is favorable to the effective fixed of module, increases anti-vibration performance, has further strengthened structural strength through newly increasing baffle and strengthening rib structure to satisfy the higher structural strength requirement of fixed converter module.
As shown in fig. 5 and 6, specifically, in the present embodiment, the transition plate 103 has an L-shaped structure. The transition plate with the L-shaped structure can be well matched with the guide structure for installation, the module installation plates can be well arranged, and the installation structure strength is improved as much as possible on the premise that the installation space is as small as possible. Specifically, in the present embodiment, the guide rail 101 is a cylindrical roller structure. The guide assembly adopts a rolling friction mode, so that the friction force in the drawing process can be further reduced, and the stable and smooth guide process is ensured.
Further, as shown in fig. 2, in this embodiment, the permanent magnetic traction converter 10 is provided with 4 groups of lifting lugs 30 symmetrically arranged, the lifting lugs 30 are provided with mounting holes 301, the mounting holes 301 are designed to be eccentric to the main beam 40 of the permanent magnetic traction converter 10 by a preset distance inwards, and the lifting lug mounting holes are designed to be eccentric to the main beam of the converter appropriately, so that consistency of hanging size and asynchronous traction converter can be achieved. Further, in the present embodiment, the mounting holes 301 include two groups and are arranged in parallel in the traveling direction. Each group of lifting lugs is provided with 2 mounting holes 301, so that the strength requirement and the safety redundancy requirement can be effectively met. Specifically, in the present embodiment, the mounting hole 301 is a kidney-shaped hole extending in a direction perpendicular to the vehicle-shaping direction. Through the waist-shaped hole, the hanging size can be flexibly adjusted according to different vehicle types, so that the hanging requirements of different vehicle types can be met. Specifically, as shown in fig. 2, the present embodiment achieves complete consistency between the hanging dimensions L1, L2, L3 and the asynchronous traction converter, and the dimension L1 can be flexibly adjusted to meet the hanging requirements of different vehicle types.
As shown in fig. 2, specifically, in the present embodiment, the high-voltage direct-current input and chopper electrical interface 11, the fan power electrical interface 12, and the control electrical interface 13 are respectively located on the same side of the permanent magnet traction converter 10, and the alternating-current output electrical interface 14 is arranged on the other side of the permanent magnet traction converter 10. Specifically, the high-voltage direct current input and chopper electrical interface 11 is positioned at the right lower part, the fan power supply electrical interface 12 is positioned at the middle lower part, the control electrical interface 13 is positioned at the left lower part, the alternating current output electrical interface 14 is positioned at the right upper part, the high-voltage wire is positioned at one side of the vehicle and at the other side of the vehicle, and is consistent with the requirement of separating wires of high-voltage and low-voltage grooves on the vehicle, and simultaneously, the electromagnetic compatibility requirement of separating wires of the high-voltage and low-voltage cables is met, so that the wiring requirement of the vehicle is met, the wiring system type of an asynchronous vehicle and a permanent magnet vehicle is realized, and the interchangeability of an asynchronous and permanent magnet traction system on the same vehicle type is realized, thereby being beneficial to popularization and use of the permanent magnet traction converter.
Further, as shown in fig. 7, in this embodiment, a current sensor 17 is disposed between the output point 15 of the current transformer module and the input point 16 of the isolated contactor, at least 2 layers of laminated copper bars are used to connect the output point 15 of the current transformer module and the output point 171 of the current sensor, cables are used to connect the output point 171 of the current sensor and the input point 16 of the isolated contactor, the cables are distributed and spread at the bottom of the cabinet, and copper bars are used to connect the output point 18 of the isolated contactor and the output point 19 of the alternating current. Specifically, between the module output point and the sensor output point, 2 layers or 3 layers of laminated copper bars are used, so that the copper bars are ensured to have proper rigidity and flexibility, the maintainability of the converter module is met, the copper bars can conveniently pass through the current sensor, and the maintainability of the current sensor is ensured; between the sensor output point and the contactor input point, a general cable or flexible cable scheme is optimized according to the current value, and wires are laid out and distributed at the bottom of the cabinet body, so that the insulation requirements of 12 cables in a narrow space are met, the cable turning radius requirement is met, the cable heat dissipation requirement is met, and the cost requirement is met; between the contactor output point and the ac output point, it is necessary to implement a plurality of cable path changes in a small height space and satisfy maintainability of the contactor and manipulability of external wiring, so that a general copper bar scheme is preferably used. Further, in the present embodiment, the copper bar between the isolated contactor output point 18 and the ac output point 19 is provided with a notch avoiding the isolated contactor. Through suitably breaking the copper bar, the external wiring bolt is not required to be disassembled when the isolation contactor is disassembled, and maintainability is improved. Further, in the present embodiment, a shield grounding point 172 is provided at a position close to the current sensor 17. In order to meet EMC performance, shielding grounding points are arranged beside the current sensor, and the shielding layer of the sensor cable is grounded.
Further, as shown in fig. 7, in this embodiment, the converter module output point 15 and the current sensor output point 171 are connected by a first module structure, the first module connection structure includes two groups, each group of first module connection structure includes 4 groups of current sensors, 6 groups of copper bars and 6 groups of insulators respectively arranged on the mounting beam, the insulators are wrapped on the copper bars, the isolation contactor input point and the ac output point are connected by a second module structure, the second module connection structure includes two groups, and each group of second module connection structure includes 2 groups of isolation contactors and 6 groups of output copper bars respectively arranged on the mounting plate. Through the modularized design, manufacturability and maintainability can be effectively improved.
As shown in fig. 7, in particular, in a preferred embodiment, the isolation contactor 4 is side mounted with the ac output point 19 on top of the isolation contactor 4. The isolation contactor adopts a side mounting mode, the mechanical mounting bolts and the copper bar connecting bolts can be fastened in the front, the secondary circuit wiring points are arranged at the top of the contactor, the operation is convenient, and the maintainability of the isolation contactor is improved.
Further, in the present embodiment, as shown in fig. 8, the ac output point 19 is wired by using a double-hole wire holder, the wire bolt 191 located at the outer side is used for the whole car wiring, and the fixing bolt 192 located at the inner side is used for fixing the copper bar. The alternating current output wiring adopts the diplopore wiring seat, and outside bolt is used for whole car wiring, and inboard bolt is used for fixed copper bar, and both separately set up, need not to operate inboard fixing bolt when whole car wiring, improves the reliability of electric connection and the maneuverability of whole car wiring.
According to the embodiment, the permanent magnet traction converter can achieve consistency of mechanical installation size and electric interface position and the asynchronous traction converter; further improving the miniaturization and light weight level of the permanent magnet traction converter.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (18)
1. The permanent magnet traction converter is characterized by comprising a filter reactor, a charging short circuit unit, a cooling fan, a direct current input cavity, a converter module, an isolation contactor and an alternating current output cavity; wherein,
the converter module is positioned in front, the cooling fan is positioned at the rear of the converter module, and the direct current input cavity is positioned at one side of the rear of the converter module and is arranged adjacent to the cooling fan;
the charging short circuit unit is positioned behind the direct current input cavity, and the filter reactor is positioned behind the cooling fan;
the alternating current output cavity is arranged opposite to the direct current input cavity, the isolation contactor is arranged in the alternating current output cavity, and the alternating current output cavity is of an externally hung box type structure.
2. The permanent magnet traction converter of claim 1, wherein the converter module comprises an IGBT device employing an XHP packaged dual transistor device, the converter module comprising a 4-way three-phase inverter circuit and a 2-way chopper circuit.
3. The permanent magnet traction converter according to claim 1 or 2, wherein the converter module comprises a control unit and a power panel, the control unit and the power panel are mounted on the front surface of the converter module and face the side surface of the vehicle body, a direct current side copper bar is arranged on one side of the direct current input cavity, and an alternating current side copper bar is arranged on one side of the alternating current output cavity.
4. The permanent magnet traction converter according to claim 1 or 2, wherein the converter modules are arranged on a cabinet mounting beam by means of a guiding assembly; wherein,
the guide assembly comprises a guide rail fixed on the cabinet body mounting beam and a chute in sliding connection with the guide rail;
the sliding chute is provided with a transition plate, the converter module is fixed on the transition plate through a module mounting plate, and the module mounting plate is fixed on the cabinet body.
5. The permanent magnet traction converter according to claim 4, wherein the module mounting plate is provided with a module mounting beam, one side of the module mounting beam is fixed on the cabinet body, the other side of the module mounting beam is connected with a stop plate, and the outer side face of the stop plate is provided with a reinforcing rib.
6. The permanent magnet traction converter according to claim 4, wherein the transition plate is L-shaped.
7. The permanent magnet traction converter according to claim 4, wherein the rail is a cylindrical roller structure.
8. The permanent magnet traction converter according to claim 1 or 2, wherein the permanent magnet traction converter is provided with symmetrically arranged lifting lugs, the lifting lugs are provided with mounting holes, and the mounting holes are designed to be eccentric and offset inwards by a preset distance relative to a main beam of the permanent magnet traction converter.
9. The permanent magnet traction converter according to claim 8, wherein the mounting holes comprise two sets and are arranged in parallel in the direction of travel.
10. The permanent magnet traction converter according to claim 8, wherein the mounting hole is a kidney-shaped hole extending in a direction perpendicular to the vehicle-shaping direction.
11. Permanent magnet traction converter according to claim 1 or 2, characterized in that the high voltage direct current input and chopper electrical interface, the fan power electrical interface and the control electrical interface are located on the same side of the permanent magnet traction converter, respectively, and the alternating current output electrical interface is arranged on the other side of the permanent magnet traction converter, respectively.
12. The permanent magnet traction converter according to claim 1 or 2, wherein a current sensor is arranged between the output point of the converter module and the input point of the isolation contactor, and at least 2 layers of laminated copper bars are adopted between the output point of the converter module and the output point of the current sensor; the output points of the current sensors are connected with the input points of the isolation contactors by cables, and the cables are distributed and spread at the bottom of the cabinet body; the output point of the isolation contactor is connected with the alternating current output point by a copper bar.
13. The permanent magnet traction converter according to claim 12, wherein the copper bar between the isolated contactor output point and the ac output point is provided with a notch that avoids the isolated contactor.
14. The permanent magnet traction converter according to claim 12, wherein a shield ground point is provided near the current sensor.
15. The permanent magnet traction converter according to claim 12, wherein the converter module output points and the current sensor output points are connected by a first module structure, the first module connection structure comprises two groups, each group of first module connection structure comprises 4 groups of current sensors, 6 groups of copper bars and 6 groups of insulators which are respectively arranged on a mounting beam, and the insulators are wrapped on the copper bars;
the isolating contactor input points are connected with the alternating current output points through a second module structure, the second module connecting structure comprises two groups, and each group of second module connecting structure comprises 2 groups of isolating contactors and 6 groups of output copper bars which are respectively arranged on the mounting plate.
16. A permanent magnet traction converter according to claim 1 or 2, wherein the isolating contactor is side mounted with an ac output point on top of the isolating contactor.
17. The permanent magnet traction converter according to claim 16, wherein the ac output point is wired by a double-hole wire holder, the wire bolts on the outer side are used for wiring the whole car, and the fixing bolts on the inner side are used for fixing the copper bars.
18. Permanent magnet traction converter according to claim 1 or 2, characterized in that the isolating contactor is a vacuum isolating contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210799999.5A CN117411337A (en) | 2022-07-06 | 2022-07-06 | Permanent magnet traction converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210799999.5A CN117411337A (en) | 2022-07-06 | 2022-07-06 | Permanent magnet traction converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117411337A true CN117411337A (en) | 2024-01-16 |
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ID=89494954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210799999.5A Pending CN117411337A (en) | 2022-07-06 | 2022-07-06 | Permanent magnet traction converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117411337A (en) |
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2022
- 2022-07-06 CN CN202210799999.5A patent/CN117411337A/en active Pending
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